Yes, snow is made of water. But dumping it into the ocean, also made of water, is against the law, since snow often picks up harmful pollutants as it is plowed off the streets. But with snowbanks in Boston piling up to near-record levels this month — just check boston.com's Shaq-o-meter — one veteran environmental leader says trucking all that snow to the city's six "snow farms" doesn't make sense when the Atlantic Ocean is right next door